Abstract
Crude extracts of fresh Dendrobium Sonia ‘Earsakul’ orchid flowers (DSE) were prepared using microwave assisted extraction (MAE; using household microwave oven) and hot water extraction (HWE; at constant 80 °C). The obtained DSEs were measured their absorbance at λmax of 543 and 583 nm and determined their total monomeric anthocyanin contents (TAC). Mathematical models of MAE of Dendrobium Sonia ‘Earsakul’ orchid flower were constructed using response surface methodology - Box-Behnken design. Studied parameters included flower to water ratio, microwave power, and extraction time, with absorbance at λmax as response. The data generated were 1) visible spectrum (400–700 nm) of DSE; 2) absorbance values at λmax and 3) TAC of DSEs obtained from various extraction conditions of MAE and HWE; 4) linear equations describing correlations between TAC and absorbance at λmax of DSEs; and 5) mathematical models of MAE of Dendrobium Sonia ‘Earsakul’ orchid.
Highlights
Crude extracts of fresh Dendrobium Sonia ‘Earsakul’ orchid flowers (DSE) were prepared using microwave assisted extraction (MAE; using household microwave oven) and hot water extraction (HWE; at constant 80 °C)
This data set of spectrophotometric properties of crude aqueous extract of Dendrobium Sonia ‘Earsakul’ orchid flower can be used as reference for optical properties of potential alternative natural dye for both food and non-food applications
The extractions were performed in random order according to Box-Behnken design with response surface methodology
Summary
Microwave assisted extraction (MAE) and hot water extraction were used to prepare crude extracts from fresh Dendrobium Sonia ‘Earsakul’ orchid flowers. Purchase of fresh Dendrobium Sonia ‘Earsakul’ orchid flowers: Taling Chan, Bangkok, Thailand 13°45 14.7 N 100°26 38.7 E 13.754088, 100.444088 Research experiment and data analysis: Salaya, Nakhon Pathom, Thailand 13°47 33.5 N 100°19 21.2 E 13.792907, 100.322589 With the article. This data set of spectrophotometric properties of crude aqueous extract of Dendrobium Sonia ‘Earsakul’ orchid flower can be used as reference for optical properties of potential alternative natural dye for both food and non-food applications. ∗ y represents total monomeric anthocyanin content (cyd-3-glu equivalents, mg/L) of crude extract and x is absorbance at λmax of the extracts
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